All singing, all dancing

What's the meaning of the phrase 'All singing, all dancing'?

Full of verve and vitality; more recently - with many features or attributes.

What's the origin of the phrase 'All singing, all dancing'?

From the advertising posters used to promote the 1929 film Broadway Melody - the first musical film - which proclaimed it to be 'All talking All singing All dancing'.

That was a literal description of the film, but was also intended to suggest a sense of vitality and excitement that the phrase is now used to convey.

In more recent years the term has been applied to high-tech equipment, computers, cars etc. in order to draw attention to their abundant features; for example, this from The Daily Telegraph, November 1995:

"Satellites as small as a box of cornflakes can be launched at little cost by riding piggyback with larger satellites. A handful of these 'microsatellites' would be used instead of a single all-singing all-dancing 'platform' bristling with instruments."